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Subject: Re: PCMCIA IDE_CS in 2.4.7
To: alan@clueserver.org (Alan Olsen)
Date: Thu, 2 Aug 2001 15:18:43 +0100 (BST)
Cc: kaos@ocs.com.au (Keith Owens), linux-kernel@vger.kernel.org (Linux Kernel)
In-Reply-To: <Pine.LNX.4.10.10107312226590.26170-100000@clueserver.org> from "Alan Olsen" at Jul 31, 2001 10:42:48 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> When I insert the card, I get a beep from the cardmgr program seeing the
> card being inserted.  Then the whole system refuses to respond to anything
> on the keyboard.  (I have not tested if the system is reachable by network
> when that happens.) 

Gunther posted this patch ages ago which seems to solve the problem

--- linux245.orig/drivers/ide/ide-cs.c  Fri Feb  9 20:40:02 2001
+++ linux/drivers/ide/ide-cs.c  Tue Jun 26 21:22:19 2001
@@ -324,6 +324,9 @@
     if (link->io.NumPorts2)
        release_region(link->io.BasePort2, link->io.NumPorts2);
 
+    outb(0x02, ctl_base); // Set nIEN = disable device interrupts
+                         // else it hangs on PCI-Cardbus add-in cards,
wedging irq
+
     /* retry registration in case device is still spinning up */
     for (i = 0; i < 10; i++) {
        hd = ide_register(io_base, ctl_base, link->irq.AssignedIRQ);
--- linux245.orig/drivers/ide/ide-probe.c       Sun Mar 18 18:25:02 2001
+++ linux/drivers/ide/ide-probe.c       Tue Jun 26 21:25:07 2001
@@ -685,6 +685,8 @@
 #else /* !CONFIG_IDEPCI_SHARE_IRQ */
                int sa = (hwif->chipset == ide_pci) ? SA_INTERRUPT|SA_SHIRQ
: SA_INTERRUPT;
 #endif /* CONFIG_IDEPCI_SHARE_IRQ */
+
+               outb(0x00, hwif->io_ports[IDE_CONTROL_OFFSET]); // clear
nIEN == enable irqs
                if (ide_request_irq(hwif->irq, &ide_intr, sa, hwif->name,
hwgroup)) {
                        if (!match)
                                kfree(hwgroup);